UncategorizedA diacid base weighing 0.2 g required 25 mL of decinormal H2SO4 for complete neutralization. Find the molecular mass of the base. 

A diacid base weighing 0.2 g required 25 mL of decinormal H2SO4 for complete neutralization. Find the molecular mass of the base. 

  1. A

    160

  2. B

    140

  3. C

    128

  4. D

    174

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    Solution:

    Number of equivalents of diacid base and sulphuric acid is same because of complete neutralization.

    No. of equivalents of diacid base=No.of equivalents of H2SO4weightmolecular weightn-factor=Normality×Volume (in L)0.2 gMolecular weight2=0.1 N×25 mL×1 L1000 mLMolecular weight=160  

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